Science Highlight




ALMA Cycle 11 Call for Proposals

The ALMA Director, on behalf of the Joint ALMA Observatory (JAO) and the partner organizations in East Asia, Europe, and North America, is pleased to announce the ALMA Cycle 11 Call for Proposals (CfP) for scientific observations to be scheduled from October 2024 to September 2025. For this CfP, the JAO anticipates having 4300 hours of approved science time on each of the 12-m, 7-m, and the Total Power arrays.  Together, the 7-m Array and Total Power Array form the Atacama Compact Array (ACA), also known as the Morita Array. Observations that are particularly encouraged include:

  • ACA, especially in the LST range of 20h to 10h
  • High frequency (Bands 8, 9, and 10) in any configuration
  • Low frequency (Bands 1, 3, and 4) at long baselines (C-7, C-8, C-9, and C-10)


ALMA Cycle 11 proposal submission will open at

15:00 UT on Thursday, 21 March 2024


The Cycle 11 proposal submission deadline is

15:00 UT on Thursday, 25 April 2024


The key dates for the CfP in Cycle 11 are given in the following Table.




21 March 2024 (15:00 UT)

Release of Cycle 11 CfP, Observing Tool, and supporting documents, and opening of the Archive for proposal submission

25 April 2024 (15:00 UT)

Proposal submission deadline for Cycle 11 proposals

5 June 2024 (15:00 UT)

Deadline to submit reviews for the distributed peer review system

August 2024

Announcement of the outcome of the proposal review process

1 October 2024

Start of ALMA Cycle 11 science observations (anticipated)

30 September 2025

End of ALMA Cycle 11


The ALMA Proposer’s Guide on the Science Portal contains all pertinent information regarding this ALMA CfP. A comprehensive description of the ALMA observatory and its components can be found in the ALMA Technical Handbook. Users should submit a Helpdesk ticket if they have any questions about ALMA or the Cycle 11 Call for Proposals.